Building-block.



J. PURDY.

BUILDING BLOCK. APPLICATION FILED FEB. 24. I915.

2 SHEETSSHEET 2.

' Patented Aug. '14, 1917 s'ra'rs JOSEP runn or rArnnso v, NEW JERSEY.

BUILDING-BLOCK,

Applicationlijlegl February 24, 1916. $eria1 No; 80,148.

To all wiwmc't may concern Be it known that I, J S PH P n er, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Building- Blocks, of which the following is a specification.

One object of this, invention is to provide a building block or. brick of rectangular form with means whereby it may interlock with a counterpart brick, and yet permit repairs to be made in .a avall built of bricks so formed with the minimum impairment of the integrity and strength of the wall. My

invention is particularly adapted to bricks or blocks employed for the lining of furnace walls and the like, where the'actionof the heat and the weight of, the boiler and other structures imposed on {the wall have .to be taken into account as disturbing influences and the necessity for repairsis more or less frequent. In carryingout my invention I provide a rectangular block or brick having on one of its horizontal faces a lug arranged midway between two opposite vertical faces, and a definite distance froma third vertical face, adjoining said horizontal face and also having a recess in-either angle formed by the other horizontal faceand either of the two first-named vertical faces and the same distance from the third vertical face as the lug, each recess beinga counterpart of ,the

other, and .two such adjoining recesses in two'such ad oining blocks. being shaped to conform to one such lugion a third block.

In the accompanyingdrawings,

Figure 1 is an isometric view of a wall for i a furnace constructed in accordance with this invention;

Fig. 2 is an inside elevation of said wall, partly in section;

Fig. 3 is a plan of the wall in the plane of the top surface of the base-blocks;

Fig. 4: shows a course of stretcher bricks and Fig. 5 a course of header bricks, constructed in accordance with my invention;

Figs. 6 and 7 are isometric views of two lining bricks, the first being for the face of the wall and the second for use in forming an angle;

Fig. 8 is an isometric View of one of header bricks; and,

Fig. 9 is an isometric view of a fragment of the base-block.

' In the drawings, Fig. 1 shows a furnace wall a composed for the most part of bricks or building blocks b of ordinary form,but provided with a lining of'bricks or building blocks, preferably composed of fire-clay or some other vitreous material, the same being formed in accordance with this invention and in the present instance including the stretchers 0, headers cl, corner or angle bricks e, and base-blocks f.

In general, the wall is built so that the bricks in the various courses break joints with those inadjoining courses; the headers (Z of course are employed for tying or anchoring the lining in ,the wall farmed by the bricks b Each of the stretcher 9 extending longitudinally of the brick,,and

arranged substantially in its opposite face, to wit, at each end of the brick, is formed a recess h, ,the twov ,recesses being arranged in the central longitudinal aXis of the brick and being counterparts of each other, and two such adjoining recesses in two such adjoining bricks being shaped to substantially conform to one lug such as g on a third brick. Of course, two such recesses, together, are a trifle larger than the lug received therein, so as to admit .the mortar or cement used the wall.

The header ,bricks Z have. the same. vertical and longitudinal dimensions as' the stretcher bricks, but they are wider than the latter, being preferably square in plan. Their lugs .g and recesses sh are ,the same in form as the lug ,g and recesses h of a stretcher brick and are arranged relatively in the same disposition excepting that they are not disposed in the central aXis of the brick, but the same distance from one of its vertical faces as the lug g and recesses h are from a vertical face of a stretcher brick.

In building up a wall composed of ordinary bricks b and the improved bricks c and (Z to form the lining of the wall I preferably employ several courses of the bricks c to one of the bricks d, as shown in Fig. 1, the latter or headers serving as already explained to tie or anchor the lining into the body of the wall formed by the bricks b.

Each lug g (or g) is received by two adjoining recesses h (or 72/) of two adjoining bricks c (or d), so that it will be observed that each brick is locked by the lugs and re cesses against lateral movement in any direction. This is of considerable importance, as

already explained, in a structure like a furnace wall which not only supports a considerable load but is subjected togreat heat and frequently to wide changes in temperature.

One important feature of my invention is the fact that by forming a lug on one of the horizontal faces of the brick and substantially midway between two opposite vertical faces and a definite distance from a third vertical face and further providing counterpart recesses in either angle formed by the opposite horizontal face of the brick and each of the two first-named vertical faces and the same distance from the third vertical face as the lug, the wall can be repaired by removing the burnt-outer otherwise damaged bricks and replacing them with new ones so that all of the bricks so replaced but i one will be interlockedjby the lug and recesses. Thus, if it were necessary to replace the bricks marked it and a? in Fig. 1, for all three bricks marked a: newbricks can be substituted, interlocked with each other and with neighboring bricks, the same as all other bricks in the wall, and only the lug on the brick which is to be substituted for the brick 0c and one-half of a lug on either of the bricks marked y would have to 'be cut away; for removal of the cement or mortar leaves enough clearance to permit the brick to be inserted notwithstanding the lug on the other brick 3 is left intact.

The bricks e for the corners are the same as the stretcher bricks 0 as to the form and disposition of their lugs g and recesses 71/, excepting that one of the recesses extends into the brick at right angles thereto (see Fig. 7). brick e in one course in Fig. 1 would receive the lug g" of the brick e in the course next below. v

I prefer to construct a wall composed of any bricks with. a base including the base blocks f. Each base-block f is rectangular in placed.

Such a recess it, therefore, of the 3 form and approximates in thickness from its face f to its face 7 the combined widths of two stretcher bricks, or the width of one headerbrick. In its rear upper portion it has a rabbet f extending across the block and approximating in width one-half the width of the block. The wall, with the bricks in the several courses breaking joints bricks 71 remain bound in the wall back of the removed, since the series of blocks, they serve to support all ofthe wall above the block until the block can be re- Having thus fully described what I claim as new anddesire to secure by Letters Patent is V g 3 i A substantiallyrectangular building block invention,

having on one of its horizontalfaces a lug shorter than the distance between and arranged substantially midway of two opposite vertical faces, and a definite distance from a third vertical face, adjoining said horizontal face, and also having a recess in each angle formed by the opposite horizontal face and each of two of the three vertical faces aforesaid, each recess being a counterpart of the other and one of them being the same distance from the third vertical face as the lug, and two such adjoining recesses in two such adjoining blocks being shaped to conform to one such lug on a thirdblock, each of said horizontal faces being otherwise ina single plane throughout, whereby in a wall formed of such bricks replacement of a number of the bricks may beeffected-with the minimum of removal of portionsthereof.

In testimony whereof I affix no signature.

' .JOSEPH URDY.

Copies of thispatent may be obtained for five cents each, by addressing the dommis sionerfof Patents, Washington,0. 

